A Window interface derived from JFrame Program plan: Include necessary header files. Define the class “ButtonDemo”. Declare the necessary private variables. Define the constructor. Set the window size. Create an object for “WindowDestroyer” class. Add the listener. Create an object for “Container” class. Initially set the background color as white. Set the layout. Create the button. Add the action to this button. Add a button on the window screen. Set the values. Define the “paint()” method. Call the “paint” method. Check if the “sky” is equal to “SUNNY”. Call the method “drawOval()” to draw the face. Draw the left and right eye using “fillOval” method. Draw a mouth using “drawArc” method. Check if the “sky” is equal to “CLOUDY”. Call the method “drawOval()” to draw the face. Draw the left and right eye using “fillOval” method. Draw a mouth using “drawArc” method. Define the “actionPerformed ()” method. Declare the required variables. Increment the value. If the action is “Sunny”, then execute the “if” loop, Set the background as pink after clicking the button. Hide the sunny button on the window screen. Show the cloudy button on the window screen. If the action is “Cloudy”, then execute the “if” loop, Set the background as gray after clicking the button. Show the sunny button on the window screen. Hide the cloudy button on the window screen. Otherwise, display error message. If the “clickCount” greater than “MAX_CLICKS”, exit the program If the “clickCount” greater than “MAX_CLICKS - 1”, display the statement. Call the “repaint” method.

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Chapter 8, Problem 9PP

Program Plan Intro

A Window interface derived from JFrame

Program plan:

Include necessary header files.

Define the class “ButtonDemo”.

Declare the necessary private variables.

Define the constructor.

Set the window size.

Create an object for “WindowDestroyer” class.

Add the listener.

Create an object for “Container” class.

Initially set the background color as white.

Set the layout.

Create the button.

Add the action to this button.

Add a button on the window screen.

Set the values.

Define the “paint()” method.

Call the “paint” method.

Check if the “sky” is equal to “SUNNY”.

Call the method “drawOval()” to draw the face.

Draw the left and right eye using “fillOval” method.

Draw a mouth using “drawArc” method.

Check if the “sky” is equal to “CLOUDY”.

Call the method “drawOval()” to draw the face.

Draw the left and right eye using “fillOval” method.

Draw a mouth using “drawArc” method.

Define the “actionPerformed ()” method.

Declare the required variables.

Increment the value.

If the action is “Sunny”, then execute the “if” loop,

Set the background as pink after clicking the button.

Hide the sunny button on the window screen.

Show the cloudy button on the window screen.

If the action is “Cloudy”, then execute the “if” loop,

Set the background as gray after clicking the button.

Show the sunny button on the window screen.

Hide the cloudy button on the window screen.

Otherwise, display error message.

If the “clickCount” greater than “MAX_CLICKS”, exit the program

If the “clickCount” greater than “MAX_CLICKS - 1”, display the statement.

Call the “repaint” method.

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